secretary of state john kerry. he's calling it an invasion, quote, it is an incredible act of aggression, really a stunning willful choice by president putin to invade another country. russia is in violation of the sovereignty of ukraine, russia is in violation of its international obligations, russia is in violation, kerry says, of its obligations under the u.n. charity, helsinki act, in violation as well of its obligations under the budapest agreement. he goes on to say, secretary kerry, you don't behave in a 19th century fashion by, again he uses this word, invading another country on completely trumped up pretexts. nato ambassadors are expected to hold an urgent meeting today on the situation in ukraine. our own erin mclaughlin is live. you have u.s. officials, secretary kerry calling this an invasion. what exactly are nato officials considering there? >> hi, jim. earlier today the nato secretary general gave a brief statement to the media in which he called on russia to deescalate tensions. take a listen to wh